2024 Chevrolet Silverado 1500

Engine safety concern. Grinding and clunking while engine is running and gets worse under load or when accelerating. Have taken into dealer for service over 6 times. Recall service was performed and their fix was to change to a thicker oil but all that caused was worse fuel economy, more expensive oil changes, and the noises have become worse. Going back to dealer next week for another attempt. Have requested lemon replacement with GM but they are denying any issue.

Vehicle: 2024 Chevrolet Silverado 1500 High Country Engine: 6.2L L87 V8 Recall: N252494001 – L87 Engine Loss of Propulsion I am submitting this complaint to report a serious safety defect involving my 2024 Chevrolet Silverado 1500 High Country related to NHTSA Safety Recall N252494001 (L87 Engine – Loss of Propulsion). My vehicle experienced a sudden engine failure consistent with the conditions described in the recall, resulting in loss of propulsion. Due to this failure, General Motors authorized a full engine replacement at an authorized GMC dealership. After the engine replacement was completed, the replacement engine also failed in the same manner as the original engine, again resulting in loss of propulsion. This second failure occurred despite the vehicle being repaired according to General Motors’ recall procedures and specifications. Loss of propulsion creates a significant safety risk, especially while driving at highway speeds or in traffic, as it can lead to sudden power loss without warning and increases the risk of a crash. Despite the replacement engine failing in the same way as the original recalled engine, General Motors is now refusing to replace the second failed engine or provide a permanent remedy. As a result, my vehicle remains unsafe to operate and unresolved under the existing safety recall. I am concerned that the recall remedy is inadequate and that replacement engines may also contain the same defect, creating an ongoing safety hazard. I am requesting that NHTSA review this matter to determine whether the recall repair is effective and whether additional corrective action is necessary to protect vehicle owners.

Vehicle does not indicate proper DEF level. Vehicle has stated several times that it is out of DEF but is not. The most recent time the vehicle was at a dealer and was noted as normal operation. Driving up to going the dealer: vehicle displayed message “DEF empty refill now vehicle speed restricted to 65mph”with a 500 mile count down. Vehicle was driven 489 miles of the 500 miles. Vehicle was taken to a dealer. Dealer confirmed that vehicle was not out of DEF, vehicle was at 40% DEF capacity (~2 gallons of fluid in a 5 gallon tank). Dealer noted that this was normal operation. This is not safe, the DEF system isn’t accurately reporting level. In other situations it hasn’t recognize DEF fills. This can potentially lead to the vehicle severely restricting speed or not allowing the motor to restart creating unsafe conditions for the passengers and other vehicles on the road way. Vehicle was under warranty at the time of the issues. Vehicle is currently just under 37,000 miles.

Transmission pauses from 1st and 2nd gear. Causing to have no acceleration from a stop. Can cause safety issue to accelerate while pulling in front of traffic. Truck has been to the dealer. Dealer says no codes triggered but the pausing still persists and is only getting worse. Truck has been doing it since around 30,000 miles. Truck currently has 36,760 miles.

Formal complaint — outdated Android/Google Built-In security patch level on 2024 Chevy Silverado; potential cybersecurity defect and negligent maintenance by manufacturer. I am submitting a formal complaint regarding a critical cybersecurity and software maintenance defect in my 2024 Chevy Silverado. The vehicle runs Google Built-In / Android Automotive OS with an Android Security Patch Level of February 2024 (as displayed under Settings → About → Android version). As of this writing in December 2025, this patch level is nearly two years outdated, with no available over-the-air (OTA) updates and no clear communication from General Motors or Google regarding continued support or end-of-life status. This condition exposes the infotainment and telematics systems to known and documented vulnerabilities, representing both a cybersecurity defect and potential consumer safety. Description of the defect: The infotainment system reports “Android Security Patch Level: February 2024.” Attempts to check for updates return “Your system is up to date.” The system shows a red exclamation mark beside the patch level, indicating a fault condition or known update gap. Neither the dealer nor OnStar/Customer Support can apply an update manually or clarify the support cadence. This leaves the vehicle permanently exposed to Android-level vulnerabilities discovered and patched long after February 2024. Security and regulatory implications: The infotainment system runs a network-connected OS with Bluetooth, Wi-Fi, cellular, and vehicle bus access. Unpatched Android components are subject to hundreds of known CVEs since February 2024 — including privilege-escalation, RCE (remote code execution), and Bluetooth/Wi-Fi stack vulnerabilities. The U.S. NHTSA Cybersecurity Best Practices for the Safety of Modern Vehicles (2022 update) and ISO/SAE 21434 require that manufacturers maintain timely security updates for all connected vehicle systems.

Formal complaint — persistent, non-disableable Bluetooth transmitter in [2024 Chevy Silverado] / privacy & safety risk; request for remediation and recall assessment I am writing to file a formal complaint regarding a safety and privacy defect in the infotainment/telematics system of my vehicle, a The unit runs Google Built-In / Android Automotive OS. This complaint documents technical evidence that the vehicle’s Bluetooth radio broadcasts a persistent, non-randomized MAC address and cannot be completely disabled via any user-accessible control. I request immediate remediation, a formal security assessment, and confirmation whether this condition will be remediated by firmware/OTA update or recall. Summary of the issue The infotainment unit’s Bluetooth adapter emits BLE advertisements that expose a static, permanent MAC address i.e ([AA:BB:CC:DD:EE:FF]) that does not change across power cycles and is visible to passive scanners while the vehicle is parked and otherwise idle. The vehicle provides no persistent user control to turn off the Bluetooth radio; menus do not disable the hardware radio. Attempts to disable Bluetooth via the system settings are ineffective. The static MAC and inability to disable the radio create an ongoing privacy and tracking risk: third parties can uniquely identify and track the vehicle across time and locations by logging the broadcasted identifier. This configuration is inconsistent with current industry cybersecurity & privacy guidance that recommends minimizing exposed identifiers, providing user control to disable wireless interfaces, and implementing randomization of wireless addresses when possible. The static MAC plus non-disableable radio constitutes a persistent, unique identifier broadcast in public spaces. This defeats reasonable efforts by consumers to limit tracking and to control their privacy.

Truck was purchased Aug 2024 During first few months, I felt a shudder/vibration when either holding speed and/or slightly accelerating between 30-45 mph, usually at 1100-1300 RPM. Current Odometer 33,995 In the last month the truck has began to vibrate worse. I have a "Rumblestrip" feeling when at the same speeds. More noticeable on surface roads when following behind traffic at 30-45 mph. Generally the shudder is felt at approx. 1100-1300 RPM. Took the truck to the dealer yesterday, and they performed a quick roadtest. Service Tech was able to feel the rumble strip shudder multiple times, however their diagnostic tool only indicated a TCC Slip 2 times during a 20 min drive. The shudder/vibration happens when in "D". It is not present in "L9", or in "Tow Mode". The shudder feels worse in 4WD. If the shudder/vibration is happening, I am able to hold the speed and RPM at the current spot, the sensation is continuous and does not go away unless I accelerate or decelerate. I tend to feel it more when on an incline, and decelerating. As or right now the data has been sent to GM for diagnostic viewing. Found multiple TSB for issue with 2500/3500 models, and 1500 models from prior years. L84 Engine - 2024 Silverado 1500 RST